PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-00:12:30
G02     212.7          57.7               13.9 +/-    0.91      16.1 +/-    0.91  0.030 / 0.020
G06     69.7           77.2               11.9 +/-    0.49      12.2 +/-    0.49  0.030 / 0.020
G12     317.3          32.5                8.9 +/-    0.97      14.9 +/-    0.97  0.080 / 0.090
G17     51.4           38.4               11.7 +/-    1.39      17.5 +/-    1.39  0.070 / 0.100
G19     33.7           52.3               11.6 +/-    1.30      14.2 +/-    1.30  0.050 / 0.060
G24     270.7          42.2               12.9 +/-    3.00      18.2 +/-    3.00  0.050 / 0.060
G28     120.2          16.1               14.3 +/-    1.57      34.6 +/-    1.57  0.110 / 0.310