PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/01-22:27:50
G01     78.9           33.3               13.0 +/-    1.66      21.3 +/-    1.66  0.070 / 0.210
G07     133.2          37.6               16.2 +/-    0.69      24.5 +/-    0.69  0.130 / 0.290
G11     60.7           36.7               11.7 +/-    0.84      18.0 +/-    0.84  0.060 / 0.090
G13     283.6          37.5               12.3 +/-    0.60      18.7 +/-    0.60  0.060 / 0.090
G15     307.9          13.8               10.2 +/-    2.68      26.2 +/-    2.68  0.030 / 0.030
G17     223.5          58.8               15.0 +/-    2.05      17.2 +/-    2.05  0.030 / 0.030
G18     55.2           21.5               12.3 +/-    3.93      26.1 +/-    3.93  0.260 / 0.260
G19     219.7          35.4               17.3 +/-    1.71      27.3 +/-    1.71  0.350 / 0.290
G28     8.4            60.5               12.5 +/-    1.44      14.2 +/-    1.44  0.030 / 0.070
G30     127.2          65.5               15.1 +/-    0.43      16.5 +/-    0.43  0.050 / 0.070