PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/10-14:58:00
G01     67.7           32.0                6.9 +/-    1.06      11.6 +/-    1.06  0.040 / 0.050
G07     138.0          25.5                7.0 +/-    2.31      13.6 +/-    2.31  0.040 / 0.050
G11     52.0           29.9                6.1 +/-    1.26      10.8 +/-    1.26  0.070 / 0.130
G13     270.9          38.2                7.0 +/-    3.28      10.5 +/-    3.28  0.100 / 0.090
G15     300.6          15.7                4.9 +/-    1.06      11.9 +/-    1.06  0.070 / 0.130
G17     233.8          67.9                7.6 +/-    0.73       8.1 +/-    0.73  0.070 / 0.120
G18     46.6           16.7                5.6 +/-    3.30      13.3 +/-    3.30  0.030 / 0.040
G19     224.7          45.0                8.1 +/-    1.67      10.9 +/-    1.67  0.040 / 0.040
G28     11.1           60.8                7.9 +/-    1.79       8.9 +/-    1.79  0.080 / 0.140
G30     137.5          58.4                7.7 +/-    0.76       8.8 +/-    0.76  0.070 / 0.130