PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-21:58:00
G02     213.5          57.6               12.9 +/-    0.80      15.0 +/-    0.80  0.090 / 0.260
G06     73.6           78.7               12.6 +/-    0.50      12.9 +/-    0.50  0.100 / 0.270
G12     316.4          30.7               10.6 +/-    0.82      18.4 +/-    0.82  0.060 / 0.070
G17     54.5           34.2               11.0 +/-    1.70      17.8 +/-    1.70  0.080 / 0.080
G19     35.9           50.8               11.3 +/-    2.06      14.1 +/-    2.06  0.060 / 0.050
G24     268.5          42.2               11.3 +/-    3.10      15.9 +/-    3.10  0.060 / 0.050
G28     118.9          20.2               13.4 +/-    2.12      29.4 +/-    2.12  0.040 / 0.040