PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/06-23:27:30
G01     43.1           19.0                9.4 +/-    3.85      21.2 +/-    3.85  0.090 / 0.090
G06     175.9          35.3               14.8 +/-    1.90      23.4 +/-    1.90  0.120 / 0.100
G13     241.2          24.3               15.7 +/-    0.92      31.2 +/-    0.92  0.040 / 0.030
G15     273.8          13.5               11.6 +/-    2.22      29.9 +/-    2.22  0.040 / 0.030
G17     338.2          74.6               12.5 +/-    0.37      12.9 +/-    0.37  0.100 / 0.140
G19     267.0          66.7               12.9 +/-    0.96      14.0 +/-    0.96  0.080 / 0.070
G24     317.7          16.1                9.9 +/-    4.29      24.0 +/-    4.29  0.160 / 0.210
G28     67.5           48.2               11.8 +/-    1.87      15.2 +/-    1.87  0.160 / 0.310
G30     153.0          29.0               15.6 +/-    1.31      27.9 +/-    1.31  0.050 / 0.050