PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/21-18:42:40
G10     266.3          38.1               12.4 +/-    0.79      18.7 +/-    0.79  0.120 / 0.160
G13     42.2           18.6                9.9 +/-    0.80      22.6 +/-    0.80  0.090 / 0.160
G15     62.9           52.5               11.2 +/-    0.62      13.7 +/-    0.62  0.050 / 0.040
G16     279.8          12.4                9.6 +/-    2.22      25.5 +/-    2.22  0.040 / 0.050
G20     296.2          60.0               10.9 +/-    0.73      12.4 +/-    0.73  0.140 / 0.350
G21     4.0            71.7               11.9 +/-    0.46      12.4 +/-    0.46  0.140 / 0.270
G24     117.9          14.1               14.0 +/-    1.36      35.6 +/-    1.36  0.210 / 0.480
G27     319.7          16.9                9.9 +/-    1.33      23.5 +/-    1.33  0.210 / 0.480
G29     167.6          32.0               14.1 +/-    0.86      23.8 +/-    0.86  0.080 / 0.230