PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-19:28:10
G07     1.6            65.3               12.9 +/-    0.60      14.1 +/-    0.60  0.030 / 0.040
G08     79.2           51.4               12.9 +/-    0.81      16.1 +/-    0.81  0.040 / 0.040
G09     184.0          63.6               15.1 +/-    1.38      16.6 +/-    1.38  0.030 / 0.030
G11     137.6          20.7               14.4 +/-    1.22      31.1 +/-    1.22  0.030 / 0.030
G23     158.7          32.2               14.2 +/-    0.75      23.8 +/-    0.75  0.080 / 0.180
G27     48.1           27.3                9.3 +/-    2.25      17.3 +/-    2.25  0.090 / 0.100
G28     244.2          33.6               14.4 +/-    1.65      23.5 +/-    1.65  0.110 / 0.130
G30     310.5          42.7               12.2 +/-    1.00      17.0 +/-    1.00  0.110 / 0.170