PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-18:12:50
G01     93.3           31.1               14.4 +/-    0.86      24.6 +/-    0.86  0.110 / 0.240
G07     122.9          48.2               16.1 +/-    0.42      20.8 +/-    0.42  0.150 / 0.250
G08     42.2           11.3               11.4 +/-    2.68      30.9 +/-    2.68  0.030 / 0.050
G11     72.5           41.2               14.2 +/-    1.27      20.2 +/-    1.27  0.030 / 0.040
G13     297.6          35.0               14.9 +/-    3.03      23.6 +/-    3.03  0.030 / 0.020
G17     213.2          48.2               17.7 +/-    0.66      22.8 +/-    0.66  0.030 / 0.020
G18     66.8           24.4               14.4 +/-    1.24      28.4 +/-    1.24  0.060 / 0.100
G19     213.7          23.0               18.1 +/-    1.67      37.0 +/-    1.67  0.070 / 0.100
G28     344.2          61.9               13.9 +/-    0.50      15.5 +/-    0.50  0.090 / 0.170
G30     95.1           77.3               16.0 +/-    0.58      16.3 +/-    0.58  0.150 / 0.160