PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-21:57:40
G03     222.0          62.9                8.4 +/-    0.97       9.3 +/-    0.97  0.050 / 0.060
G07     253.6          12.8                8.9 +/-    5.22      23.2 +/-    5.22  0.050 / 0.060
G09     310.0          29.9                7.2 +/-    1.26      12.6 +/-    1.26  0.170 / 0.410
G14     104.7          12.3                8.6 +/-    2.06      22.9 +/-    2.06  0.150 / 0.480
G16     103.4          62.4                9.6 +/-    0.80      10.7 +/-    0.80  0.040 / 0.050
G22     192.3          46.7                9.6 +/-    0.51      12.7 +/-    0.51  0.040 / 0.040
G23     325.7          55.7                7.7 +/-    0.66       9.1 +/-    0.66  0.030 / 0.040
G26     58.4           46.5                5.3 +/-    0.48       7.0 +/-    0.48  0.040 / 0.040
G31     56.9           13.5                5.6 +/-    2.28      14.4 +/-    2.28  0.050 / 0.050