PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/21-18:42:40
G01     277.2          41.3               11.7 +/-    1.08      16.7 +/-    1.08  0.060 / 0.050
G03     315.1          27.0               10.1 +/-    0.91      18.8 +/-    0.91  0.050 / 0.050
G10     127.0          21.1               11.5 +/-    1.68      24.8 +/-    1.68  0.080 / 0.090
G11     256.7          22.5               10.7 +/-    2.67      22.2 +/-    2.67  0.050 / 0.080
G14     37.0           53.3               10.3 +/-    0.49      12.5 +/-    0.49  0.030 / 0.020
G22     314.6          47.9               10.7 +/-    1.30      13.9 +/-    1.30  0.020 / 0.030
G25     56.9           18.1                8.9 +/-    0.47      20.5 +/-    0.47  0.050 / 0.090
G26     151.0          21.1               12.8 +/-    1.32      27.5 +/-    1.32  0.050 / 0.100
G31     69.8           77.9                9.7 +/-    0.78       9.9 +/-    0.78  0.040 / 0.060
G32     60.3           35.2                9.1 +/-    1.14      14.3 +/-    1.14  0.040 / 0.070