PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/09-21:12:50
G01     43.1           19.0               11.0 +/-    0.98      24.8 +/-    0.98  0.080 / 0.230
G06     175.1          36.0               18.7 +/-    1.28      29.1 +/-    1.28  0.100 / 0.230
G13     241.0          24.3               15.5 +/-    1.60      30.7 +/-    1.60  0.080 / 0.150
G15     274.5          13.4               12.5 +/-    2.17      32.3 +/-    2.17  0.080 / 0.160
G17     340.5          74.4               14.0 +/-    0.63      14.5 +/-    0.63  0.040 / 0.060
G19     265.8          66.0               13.1 +/-    0.74      14.2 +/-    0.74  0.040 / 0.070
G24     317.5          16.5               10.1 +/-    2.39      24.2 +/-    2.39  0.060 / 0.090
G28     67.3           48.3               13.2 +/-    0.31      17.1 +/-    0.31  0.060 / 0.090
G30     153.3          30.1               18.1 +/-    1.69      31.7 +/-    1.69  0.150 / 0.220