PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/08-13:58:10
G05     47.4           21.2                5.1 +/-    1.86      10.8 +/-    1.86  0.040 / 0.070
G13     79.7           36.1                9.8 +/-    1.04      15.2 +/-    1.04  0.070 / 0.070
G15     131.5          49.8                9.4 +/-    0.30      11.9 +/-    0.30  0.040 / 0.080
G20     245.2          34.5                6.5 +/-    2.53      10.4 +/-    2.53  0.060 / 0.080
G21     312.7          47.1                6.8 +/-    1.40       8.8 +/-    1.40  0.030 / 0.020
G25     196.4          10.8               12.6 +/-    3.07      34.6 +/-    3.07  0.030 / 0.020
G26     293.3          19.5                2.0 +/-    1.43       4.4 +/-    1.43  0.190 / 0.260
G29     149.6          74.7                9.7 +/-    0.64      10.0 +/-    0.64  0.220 / 0.210