PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/21-05:58:00
G01     96.5           30.0                6.0 +/-    0.65      10.5 +/-    0.65  0.060 / 0.110
G07     120.5          48.4                6.9 +/-    0.45       8.9 +/-    0.45  0.080 / 0.120
G08     41.7           9.7                 1.2 +/-    4.19       3.5 +/-    4.19  0.030 / 0.030
G11     73.3           40.9                4.9 +/-    1.59       7.1 +/-    1.59  0.030 / 0.020
G13     300.3          34.4                4.2 +/-    1.31       6.8 +/-    1.31  0.040 / 0.040
G17     209.7          50.7                8.0 +/-    0.64      10.0 +/-    0.64  0.040 / 0.040
G19     212.4          19.5                6.3 +/-    2.30      14.0 +/-    2.30  0.050 / 0.040
G28     334.1          61.7                4.3 +/-    0.53       4.8 +/-    0.53  0.050 / 0.040
G30     71.9           80.3                4.7 +/-    0.54       4.7 +/-    0.54  0.040 / 0.040