PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/02-13:28:00
G01     65.3           31.5                5.9 +/-    0.63      10.0 +/-    0.63  0.040 / 0.060
G07     139.0          24.5                6.1 +/-    1.03      12.1 +/-    1.03  0.040 / 0.060
G11     51.0           28.9                4.4 +/-    1.16       7.9 +/-    1.16  0.060 / 0.190
G13     268.3          37.9                8.0 +/-    1.22      12.1 +/-    1.22  0.060 / 0.170
G15     299.3          15.7                2.9 +/-    2.57       7.0 +/-    2.57  0.050 / 0.080
G17     236.6          68.3                6.9 +/-    0.48       7.4 +/-    0.48  0.060 / 0.100
G18     45.3           15.8                4.1 +/-    1.99      10.0 +/-    1.99  0.050 / 0.130
G19     226.3          47.1                7.1 +/-    1.19       9.3 +/-    1.19  0.100 / 0.160
G28     13.8           60.6                5.5 +/-    0.92       6.2 +/-    0.92  0.150 / 0.460
G30     139.4          57.7                6.6 +/-    0.72       7.7 +/-    0.72  0.140 / 0.390