PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-16:27:50
G01     55.4           28.6                8.8 +/-    0.80      15.9 +/-    0.80  0.040 / 0.050
G06     177.9          20.6              -15.5 +/-   38.08     -33.6 +/-   38.08  0.040 / 0.080
G07     144.2          18.1               12.2 +/-    2.00      28.2 +/-    2.00  0.050 / 0.100
G11     46.2           19.7                9.2 +/-    1.44      20.5 +/-    1.44  0.040 / 0.090
G13     256.9          33.4               12.2 +/-    1.60      19.9 +/-    1.60  0.100 / 0.230
G15     291.6          15.5               10.3 +/-    2.44      25.4 +/-    2.44  0.090 / 0.290
G17     279.1          78.2               12.1 +/-    0.71      12.3 +/-    0.71  0.100 / 0.250
G19     237.1          52.1               13.7 +/-    0.74      16.8 +/-    0.74  0.080 / 0.210
G28     43.2           55.2               11.1 +/-    0.37      13.2 +/-    0.37  0.030 / 0.060
G30     146.9          48.2               13.3 +/-    0.67      17.2 +/-    0.67  0.030 / 0.070