PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-13:58:00
G01     69.0           32.2                7.6 +/-    1.09      12.7 +/-    1.09  0.050 / 0.050
G07     137.3          27.1                7.9 +/-    1.01      14.7 +/-    1.01  0.040 / 0.040
G11     53.0           31.0                5.9 +/-    1.10      10.2 +/-    1.10  0.040 / 0.040
G13     272.5          38.5                8.9 +/-    1.89      13.2 +/-    1.89  0.030 / 0.040
G15     302.0          15.3                4.6 +/-    1.48      11.4 +/-    1.48  0.130 / 0.230
G17     231.3          66.0                9.8 +/-    1.07      10.6 +/-    1.07  0.110 / 0.190
G18     47.7           17.4                5.9 +/-    1.64      13.9 +/-    1.64  0.110 / 0.090
G19     223.7          44.0                9.1 +/-    1.75      12.5 +/-    1.75  0.100 / 0.090
G28     8.1            61.0                6.6 +/-    1.18       7.5 +/-    1.18  0.060 / 0.110
G30     136.3          60.4                8.3 +/-    0.34       9.3 +/-    0.34  0.070 / 0.120