PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-12:43:00
G03     236.1          70.4                5.8 +/-    0.49       6.1 +/-    0.49  0.040 / 0.040
G09     300.6          14.3                5.2 +/-    2.34      13.1 +/-    2.34  0.040 / 0.050
G14     96.6           16.3                5.8 +/-    2.31      14.0 +/-    2.31  0.030 / 0.030
G16     137.5          54.6                6.6 +/-    0.80       7.9 +/-    0.80  0.050 / 0.040
G22     193.3          56.8                6.1 +/-    0.50       7.1 +/-    0.50  0.120 / 0.240
G23     317.0          46.9                5.1 +/-    0.50       6.7 +/-    0.50  0.150 / 0.290
G26     78.2           54.3                4.5 +/-    0.94       5.3 +/-    0.94  0.040 / 0.040
G31     50.5           22.4                4.6 +/-    2.46       9.5 +/-    2.46  0.030 / 0.050