PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/22-14:28:10
G01     57.4           29.2                5.2 +/-    0.98       9.3 +/-    0.98  0.080 / 0.170
G07     142.3          17.5                6.5 +/-    1.76      15.2 +/-    1.76  0.080 / 0.140
G11     47.3           23.0                5.3 +/-    2.12      11.0 +/-    2.12  0.030 / 0.030
G13     259.2          35.5                8.3 +/-    1.85      13.0 +/-    1.85  0.030 / 0.030
G15     292.2          16.3                6.3 +/-    2.21      15.3 +/-    2.21  0.060 / 0.050
G17     256.2          74.6                7.9 +/-    0.41       8.2 +/-    0.41  0.050 / 0.060
G19     233.8          53.7                8.8 +/-    2.40      10.6 +/-    2.40  0.130 / 0.080
G28     27.9           59.1                6.5 +/-    0.35       7.4 +/-    0.35  0.090 / 0.080
G30     144.7          49.7                7.1 +/-    0.75       9.0 +/-    0.75  0.160 / 0.300