PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/26-17:58:10
G10     255.7          31.1               11.1 +/-    1.98      19.0 +/-    1.98  0.130 / 0.580
G13     48.6           26.1               10.2 +/-    2.36      19.4 +/-    2.36  0.110 / 0.620
G15     80.0           58.0               11.8 +/-    1.02      13.6 +/-    1.02  0.040 / 0.050
G16     290.1          14.9                7.5 +/-    3.13      18.7 +/-    3.13  0.040 / 0.040
G20     278.2          54.4               13.0 +/-    3.62      15.6 +/-    3.62  0.090 / 0.140
G21     343.9          64.9               12.0 +/-    0.75      13.1 +/-    0.75  0.170 / 0.170
G26     263.4          13.1                9.8 +/-    2.25      25.4 +/-    2.25  0.030 / 0.070
G29     165.7          43.3               12.5 +/-    1.28      17.2 +/-    1.28  0.020 / 0.030