PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-17:42:50
G03     190.8          24.9               11.1 +/-    2.91      21.7 +/-    2.91  0.060 / 0.090
G07     283.8          33.3               10.3 +/-    1.43      16.9 +/-    1.43  0.060 / 0.100
G08     150.2          20.9               12.9 +/-    0.73      27.9 +/-    0.73  0.030 / 0.030
G09     320.4          55.5                9.9 +/-    1.50      11.7 +/-    1.50  0.030 / 0.040
G16     44.9           44.0                8.7 +/-    0.45      11.9 +/-    0.45  0.100 / 0.360
G23     93.0           80.4               10.1 +/-    0.83      10.2 +/-    0.83  0.100 / 0.310
G26     42.9           15.5                8.7 +/-    0.82      21.3 +/-    0.82  0.040 / 0.090
G27     106.1          30.8               12.2 +/-    0.93      21.0 +/-    0.93  0.040 / 0.090
G30     269.7          10.7               -5.0 +/-   34.96     -13.9 +/-   34.96  0.080 / 0.140