PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-13:58:10
G02     201.7          19.0                7.7 +/-    1.56      17.3 +/-    1.56  0.130 / 0.320
G06     166.5          57.4                8.3 +/-    0.75       9.6 +/-    0.75  0.150 / 0.330
G13     225.8          12.1                4.0 +/-    1.70      10.7 +/-    1.70  0.090 / 0.110
G17     26.3           57.0                6.1 +/-    0.94       7.1 +/-    0.94  0.080 / 0.110
G19     314.2          70.1                5.6 +/-    0.61       5.9 +/-    0.61  0.040 / 0.050
G24     307.9          32.2                5.4 +/-    1.97       9.0 +/-    1.97  0.050 / 0.040
G28     89.2           39.1                7.5 +/-    0.80      11.1 +/-    0.80  0.120 / 0.470
G30     158.0          15.1                8.9 +/-    1.59      22.1 +/-    1.59  0.090 / 0.450