PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-18:27:50
G01     248.1          33.7               11.4 +/-    1.56      18.6 +/-    1.56  0.040 / 0.040
G03     315.0          49.0                8.4 +/-    0.90      10.7 +/-    0.90  0.040 / 0.040
G11     237.2          11.3               12.9 +/-    1.51      35.1 +/-    1.51  0.050 / 0.100
G14     62.4           40.1                7.7 +/-    1.56      11.3 +/-    1.56  0.050 / 0.090
G16     162.5          20.4                1.0 +/-   22.23       2.3 +/-   22.23  0.050 / 0.040
G22     299.4          69.6                8.8 +/-    0.25       9.3 +/-    0.25  0.060 / 0.040
G23     289.2          21.9               10.6 +/-    1.59      22.3 +/-    1.59  0.120 / 0.240
G26     133.3          40.4               13.3 +/-    0.81      19.2 +/-    0.81  0.120 / 0.310
G31     40.4           55.2                7.6 +/-    0.47       9.0 +/-    0.47  0.040 / 0.050
G32     80.0           20.7                9.1 +/-    1.15      19.6 +/-    1.15  0.050 / 0.050