PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/22-12:43:10
G07     333.1          58.5                2.6 +/-    1.02       3.0 +/-    1.02  0.030 / 0.050
G08     109.9          50.1                5.5 +/-    0.41       7.0 +/-    0.41  0.030 / 0.060
G09     208.4          79.4                3.6 +/-    0.69       3.7 +/-    0.69  0.130 / 0.260
G11     148.4          11.0               -0.5 +/-   17.34      -1.3 +/-   17.34  0.090 / 0.210
G16     45.4           11.5                3.3 +/-    3.20       9.0 +/-    3.20  0.200 / 0.480
G23     152.6          44.1                6.0 +/-    0.63       8.1 +/-    0.63  0.260 / 0.490
G27     61.2           34.6                3.5 +/-    0.60       5.5 +/-    0.60  0.040 / 0.080
G28     232.2          20.3                5.9 +/-    2.78      12.9 +/-    2.78  0.040 / 0.070
G30     299.5          34.3                4.1 +/-    2.30       6.7 +/-    2.30  0.030 / 0.080