PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-01:58:00
G01     128.7          10.3              -18.1 +/-   24.25     -50.0 +/-   24.25  0.050 / 0.080
G07     46.0           69.6                6.4 +/-    0.54       6.7 +/-    0.54  0.040 / 0.080
G08     52.7           42.0                4.8 +/-    0.87       6.8 +/-    0.87  0.080 / 0.320
G09     179.2          39.3               10.7 +/-    0.70      15.8 +/-    0.70  0.040 / 0.280
G11     122.3          33.3                8.8 +/-    0.94      14.4 +/-    0.94  0.020 / 0.040
G17     199.8          12.8                8.8 +/-    2.49      23.0 +/-    2.49  0.030 / 0.040
G28     273.9          52.3                7.3 +/-    0.69       9.0 +/-    0.69  0.040 / 0.050
G30     334.8          61.1                4.5 +/-    0.73       5.1 +/-    0.73  0.040 / 0.050