PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-18:12:30
G02     205.1          37.7               13.5 +/-    1.36      20.4 +/-    1.36  0.070 / 0.080
G06     144.9          74.2               13.3 +/-    0.59      13.8 +/-    0.59  0.070 / 0.080
G12     310.8          21.4               11.3 +/-    3.27      24.1 +/-    3.27  0.030 / 0.020
G17     39.6           46.4               12.0 +/-    1.24      15.8 +/-    1.24  0.020 / 0.020
G19     3.8            64.0               12.5 +/-    0.40      13.7 +/-    0.40  0.170 / 0.210
G24     291.8          40.7               11.9 +/-    9.92      17.1 +/-    9.92  0.160 / 0.160
G28     106.5          28.4               13.2 +/-    0.98      23.9 +/-    0.98  0.030 / 0.030