PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/01-17:28:00
G01     45.3           21.5                8.2 +/-    1.51      17.3 +/-    1.51  0.130 / 0.320
G06     175.2          32.9               12.3 +/-    1.29      20.3 +/-    1.29  0.130 / 0.310
G13     244.0          26.7               11.7 +/-    2.06      22.1 +/-    2.06  0.050 / 0.090
G15     279.5          14.0                9.5 +/-    1.52      24.2 +/-    1.52  0.060 / 0.090
G17     338.6          75.8               11.3 +/-    0.61      11.6 +/-    0.61  0.090 / 0.180
G19     256.1          62.3               10.5 +/-    0.77      11.7 +/-    0.77  0.100 / 0.150
G24     318.1          14.2                7.0 +/-    2.17      17.8 +/-    2.17  0.040 / 0.070
G28     61.8           50.2               10.6 +/-    0.61      13.4 +/-    0.61  0.040 / 0.070
G30     152.5          35.2               11.8 +/-    0.86      18.6 +/-    0.86  0.100 / 0.230