PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-16:13:00
G03     243.7          70.7               10.5 +/-    0.28      11.0 +/-    0.28  0.130 / 0.280
G09     299.9          13.4               10.2 +/-    1.37      26.4 +/-    1.37  0.100 / 0.320
G14     94.3           20.4                8.2 +/-    1.82      18.0 +/-    1.82  0.060 / 0.070
G16     134.4          55.0               12.4 +/-    0.67      14.8 +/-    0.67  0.040 / 0.060
G22     193.7          58.8               10.3 +/-    0.91      11.8 +/-    0.91  0.060 / 0.040
G23     317.4          47.7                9.0 +/-    1.06      11.6 +/-    1.06  0.030 / 0.040
G26     76.3           52.8               10.0 +/-    0.82      12.2 +/-    0.82  0.140 / 0.210
G31     50.0           22.4                7.6 +/-    3.37      15.7 +/-    3.37  0.280 / 0.180