PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/06-13:58:00
G01     73.4           33.1                5.4 +/-    1.01       8.9 +/-    1.01  0.030 / 0.030
G07     136.1          33.0                7.2 +/-    0.76      11.9 +/-    0.76  0.030 / 0.030
G11     54.6           31.4                6.5 +/-    1.32      11.0 +/-    1.32  0.050 / 0.080
G13     277.0          37.9                7.3 +/-    2.38      11.0 +/-    2.38  0.060 / 0.080
G15     307.2          13.0                4.7 +/-    2.33      12.2 +/-    2.33  0.050 / 0.080
G17     229.7          68.0                8.2 +/-    0.65       8.8 +/-    0.65  0.060 / 0.080
G18     50.4           18.9                7.0 +/-    3.28      15.7 +/-    3.28  0.050 / 0.090
G19     222.4          36.6                9.8 +/-    1.55      15.2 +/-    1.55  0.080 / 0.100
G28     15.2           59.8                7.5 +/-    1.01       8.5 +/-    1.01  0.090 / 0.150
G30     132.9          65.5                8.2 +/-    0.35       8.9 +/-    0.35  0.130 / 0.170