PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-15:43:00
G03     259.5          71.6               10.5 +/-    0.96      11.0 +/-    0.96  0.100 / 0.220
G14     90.5           23.2                8.4 +/-    1.82      17.0 +/-    1.82  0.110 / 0.220
G16     139.7          51.2               10.8 +/-    0.64      13.4 +/-    0.64  0.050 / 0.060
G22     196.9          63.1               11.5 +/-    0.78      12.7 +/-    0.78  0.070 / 0.070
G23     314.2          44.7               10.3 +/-    0.63      14.0 +/-    0.63  0.040 / 0.040
G26     83.8           53.7                9.8 +/-    0.67      11.8 +/-    0.67  0.040 / 0.040
G31     48.1           25.7                8.5 +/-    2.13      16.4 +/-    2.13  0.040 / 0.050