PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-14:58:00
G01     69.9           32.3                8.2 +/-    0.88      13.6 +/-    0.88  0.050 / 0.050
G07     137.0          27.2                8.0 +/-    1.03      14.8 +/-    1.03  0.040 / 0.050
G11     53.3           31.2                6.9 +/-    1.21      11.9 +/-    1.21  0.050 / 0.120
G13     273.4          38.5                8.9 +/-    1.90      13.2 +/-    1.90  0.070 / 0.120
G15     302.3          15.3                6.4 +/-    1.05      15.8 +/-    1.05  0.070 / 0.110
G17     230.6          66.3                8.3 +/-    0.90       9.0 +/-    0.90  0.080 / 0.140
G18     48.1           17.7                6.6 +/-    1.19      15.4 +/-    1.19  0.060 / 0.030
G19     223.2          43.2                8.0 +/-    2.06      11.0 +/-    2.06  0.040 / 0.040
G28     7.5            61.0                8.0 +/-    0.94       9.0 +/-    0.94  0.090 / 0.080
G30     135.6          60.2                7.6 +/-    0.42       8.6 +/-    0.42  0.090 / 0.090