PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-00:27:50
G10     260.9          34.4               10.3 +/-    1.70      16.5 +/-    1.70  0.090 / 0.170
G13     45.0           22.6                6.6 +/-    1.16      13.6 +/-    1.16  0.110 / 0.270
G15     69.4           55.0                7.7 +/-    0.59       9.2 +/-    0.59  0.100 / 0.270
G16     283.1          14.1                8.1 +/-    1.37      20.7 +/-    1.37  0.100 / 0.310
G20     269.5          39.3                8.5 +/-    0.94      12.6 +/-    0.94  0.130 / 0.370
G21     348.2          67.4                6.8 +/-    0.66       7.3 +/-    0.66  0.110 / 0.350
G24     123.9          10.9                6.7 +/-   32.43      18.3 +/-   32.43  0.080 / 0.100
G26     256.2          10.6                9.0 +/-    3.36      24.8 +/-    3.36  0.080 / 0.090
G27     320.9          14.0                6.4 +/-    2.25      16.3 +/-    2.25  0.040 / 0.040
G29     167.6          38.6               12.1 +/-    0.79      18.0 +/-    0.79  0.040 / 0.040