PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-03:13:10
G01     319.0          19.1                6.7 +/-    1.67      15.1 +/-    1.67  0.130 / 0.190
G08     261.2          13.6                8.8 +/-    2.18      22.7 +/-    2.18  0.140 / 0.180
G10     80.4           51.8                7.7 +/-    0.57       9.6 +/-    0.57  0.040 / 0.050
G11     303.7          22.4                7.6 +/-    1.68      15.7 +/-    1.68  0.040 / 0.050
G14     293.0          70.4                9.2 +/-    0.72       9.7 +/-    0.72  0.060 / 0.070
G18     304.6          41.0                8.7 +/-    2.24      12.4 +/-    2.24  0.080 / 0.080
G20     105.3          29.5                7.8 +/-    1.52      13.8 +/-    1.52  0.030 / 0.030
G31     174.5          42.8               10.0 +/-    0.95      13.9 +/-    0.95  0.030 / 0.020
G32     4.5            68.4                7.0 +/-    0.68       7.5 +/-    0.68  0.130 / 0.350