PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-21:57:50
G10     297.9          52.1               10.4 +/-    1.83      12.8 +/-    1.83  0.040 / 0.040
G14     210.3          11.3               -1.5 +/-   26.93      -4.0 +/-   26.93  0.040 / 0.040
G15     46.9           33.0                9.3 +/-    1.38      15.3 +/-    1.38  0.220 / 0.510
G20     352.9          65.4               10.3 +/-    0.49      11.2 +/-    0.49  0.120 / 0.480
G21     97.0           74.0               11.9 +/-    0.58      12.3 +/-    0.58  0.060 / 0.090
G24     94.6           26.3               11.0 +/-    1.61      20.9 +/-    1.61  0.080 / 0.090
G27     301.2          33.7                8.8 +/-    2.30      14.3 +/-    2.30  0.080 / 0.110
G32     210.4          33.3               13.5 +/-    1.39      22.2 +/-    1.39  0.070 / 0.120