PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-16:12:50
G10     268.1          38.3               10.7 +/-    0.80      16.0 +/-    0.80  0.080 / 0.200
G13     41.8           18.5                7.9 +/-    0.70      18.0 +/-    0.70  0.080 / 0.200
G15     57.0           46.5                9.1 +/-    0.40      12.0 +/-    0.40  0.030 / 0.050
G16     282.3          10.9                9.1 +/-    1.80      24.9 +/-    1.80  0.040 / 0.040
G18     307.5          65.8                9.4 +/-    0.63      10.2 +/-    0.63  0.150 / 0.230
G20     54.0           36.3                7.8 +/-    0.50      12.1 +/-    0.50  0.160 / 0.250
G21     25.3           74.0               10.1 +/-    1.13      10.5 +/-    1.13  0.050 / 0.120
G24     120.4          14.6               16.1 +/-    1.54      40.5 +/-    1.54  0.050 / 0.110
G27     317.4          20.9                7.2 +/-    3.89      15.6 +/-    3.89  0.190 / 0.550
G29     166.2          25.9               12.9 +/-    1.08      24.8 +/-    1.08  0.140 / 0.590