PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-01:13:10
G01     124.1          14.1                8.7 +/-    2.00      22.2 +/-    2.00  0.090 / 0.060
G07     63.7           68.8                5.8 +/-    0.30       6.1 +/-    0.30  0.100 / 0.070
G08     48.6           37.8                5.0 +/-    1.13       7.5 +/-    1.13  0.180 / 0.250
G09     178.5          33.1                7.9 +/-    0.84      13.1 +/-    0.84  0.230 / 0.280
G11     116.6          36.7                7.7 +/-    0.89      11.8 +/-    0.89  0.280 / 0.230
G13     320.4          13.7                2.1 +/-    1.65       5.5 +/-    1.65  0.150 / 0.300
G17     200.8          18.1                7.9 +/-    1.89      18.3 +/-    1.89  0.050 / 0.060
G28     283.4          55.3                4.8 +/-    2.47       5.8 +/-    2.47  0.030 / 0.040
G30     344.5          66.3                4.4 +/-    0.71       4.7 +/-    0.71  0.040 / 0.030