PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-22:12:30
G07     338.6          59.9               11.9 +/-    0.44      13.5 +/-    0.44  0.090 / 0.130
G08     95.9           53.4               13.4 +/-    0.46      16.2 +/-    0.46  0.080 / 0.160
G09     189.5          70.2               15.8 +/-    0.82      16.7 +/-    0.82  0.050 / 0.130
G11     145.6          14.7               14.0 +/-    2.76      35.1 +/-    2.76  0.060 / 0.170
G23     156.2          35.9               14.5 +/-    0.37      22.7 +/-    0.37  0.030 / 0.040
G27     50.8           28.8               10.8 +/-    2.26      19.5 +/-    2.26  0.030 / 0.040
G28     241.0          33.4               12.5 +/-    1.24      20.5 +/-    1.24  0.040 / 0.090
G30     307.9          41.3               11.0 +/-    1.49      15.7 +/-    1.49  0.050 / 0.080