PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-13:57:50
G01     123.0          13.9                9.3 +/-    3.55      23.6 +/-    3.55  0.060 / 0.100
G07     74.6           65.7                7.9 +/-    0.61       8.5 +/-    0.61  0.100 / 0.130
G08     48.7           38.0                6.9 +/-    1.30      10.3 +/-    1.30  0.060 / 0.100
G09     178.3          33.2                8.1 +/-    1.46      13.3 +/-    1.46  0.050 / 0.090
G11     113.4          38.3               10.2 +/-    0.99      15.3 +/-    0.99  0.020 / 0.030
G13     319.5          15.9                6.9 +/-    3.28      16.8 +/-    3.28  0.030 / 0.030
G17     200.6          16.8                7.8 +/-    1.09      18.6 +/-    1.09  0.170 / 0.140
G18     98.7           18.5                7.9 +/-    1.59      18.2 +/-    1.59  0.120 / 0.290
G28     275.7          50.6                9.3 +/-    3.53      11.6 +/-    3.53  0.100 / 0.270
G30     341.7          65.8                8.3 +/-    0.85       9.0 +/-    0.85  0.120 / 0.260