PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-17:42:40
G01     44.5           20.7                9.6 +/-    1.45      20.9 +/-    1.45  0.150 / 0.400
G06     175.0          34.1               13.9 +/-    1.28      22.5 +/-    1.28  0.200 / 0.580
G13     242.9          25.9               13.6 +/-    1.36      26.0 +/-    1.36  0.060 / 0.110
G15     278.3          13.7               11.1 +/-    1.12      28.4 +/-    1.12  0.060 / 0.090
G17     342.3          75.1               12.6 +/-    0.43      13.0 +/-    0.43  0.080 / 0.170
G19     258.7          63.3               12.0 +/-    0.55      13.3 +/-    0.55  0.080 / 0.200
G24     317.9          15.2               10.0 +/-    1.06      24.7 +/-    1.06  0.040 / 0.070
G28     63.5           49.7               12.5 +/-    0.62      15.9 +/-    0.62  0.040 / 0.080
G30     152.9          33.9               13.7 +/-    1.15      22.1 +/-    1.15  0.020 / 0.040