PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-01:58:00
G07     20.3           68.9                4.0 +/-    0.85       4.2 +/-    0.85  0.050 / 0.050
G08     59.8           45.8                2.5 +/-    0.49       3.4 +/-    0.49  0.050 / 0.050
G09     174.7          43.2                7.6 +/-    1.19      10.5 +/-    1.19  0.040 / 0.040
G11     132.9          29.1                7.9 +/-    0.98      14.1 +/-    0.98  0.030 / 0.040
G23     160.6          18.6                5.4 +/-    1.38      12.4 +/-    1.38  0.110 / 0.340
G27     39.7           15.6                2.8 +/-    2.18       6.9 +/-    2.18  0.130 / 0.280
G28     255.1          38.7                6.1 +/-    1.57       9.1 +/-    1.57  0.090 / 0.190
G30     318.1          48.7                3.6 +/-    0.64       4.6 +/-    0.64  0.080 / 0.220