PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-03:58:00
G01     128.2          10.7                2.4 +/-   24.14       6.6 +/-   24.14  0.110 / 0.080
G07     49.1           69.4                6.5 +/-    0.57       6.9 +/-    0.57  0.140 / 0.100
G08     51.6           40.6                4.5 +/-    1.02       6.4 +/-    1.02  0.150 / 0.210
G09     178.8          38.3               10.0 +/-    0.91      14.9 +/-    0.91  0.280 / 0.240
G11     120.5          33.6                9.0 +/-    1.45      14.6 +/-    1.45  0.220 / 0.410
G17     199.6          14.2                5.3 +/-    2.93      13.3 +/-    2.93  0.210 / 0.340
G28     274.9          52.6                7.8 +/-    3.83       9.5 +/-    3.83  0.070 / 0.070
G30     333.7          60.5                5.0 +/-    0.46       5.7 +/-    0.46  0.070 / 0.070