PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/28-14:12:40
G02     66.2           26.5                4.7 +/-    1.53       8.9 +/-    1.53  0.030 / 0.030
G05     51.0           55.7                6.3 +/-    0.49       7.5 +/-    0.49  0.020 / 0.020
G12     184.7          26.3                8.2 +/-    0.90      15.5 +/-    0.90  0.080 / 0.270
G13     123.8          20.0               10.9 +/-    0.98      23.9 +/-    0.98  0.120 / 0.260
G15     158.8          18.3               10.1 +/-    2.20      23.2 +/-    2.20  0.110 / 0.160
G20     213.9          65.9                8.7 +/-    0.57       9.4 +/-    0.57  0.120 / 0.170
G21     278.8          25.6                5.2 +/-    2.70      10.1 +/-    2.70  0.030 / 0.030
G25     226.7          46.1                6.8 +/-    2.15       9.0 +/-    2.15  0.030 / 0.040
G29     339.1          66.3                5.7 +/-    0.26       6.1 +/-    0.26  0.100 / 0.250