PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-18:58:00
G01     101.7          28.2               13.3 +/-    0.67      24.3 +/-    0.67  0.110 / 0.230
G07     114.1          54.7               13.3 +/-    0.67      16.0 +/-    0.67  0.240 / 0.170
G08     41.9           18.3               10.4 +/-    1.44      23.9 +/-    1.44  0.030 / 0.020
G11     83.0           43.0               14.5 +/-    0.92      20.1 +/-    0.92  0.040 / 0.030
G13     305.4          31.5               10.9 +/-    1.28      18.6 +/-    1.28  0.020 / 0.040
G17     209.1          39.8               12.6 +/-    1.03      18.4 +/-    1.03  0.030 / 0.040
G18     75.1           24.8               13.6 +/-    1.10      26.8 +/-    1.10  0.050 / 0.040
G19     210.8          16.5                2.4 +/-   15.70       5.7 +/-   15.70  0.090 / 0.050
G28     329.0          61.7               12.0 +/-    0.56      13.4 +/-    0.56  0.080 / 0.160
G30     57.3           79.4               13.9 +/-    0.36      14.1 +/-    0.36  0.090 / 0.150