PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-12:27:50
G01     257.0          38.6                7.8 +/-    1.60      11.7 +/-    1.60  0.050 / 0.100
G03     317.0          43.7                4.7 +/-    0.64       6.4 +/-    0.64  0.060 / 0.080
G11     241.0          14.5                4.0 +/-    3.02       9.9 +/-    3.02  0.070 / 0.090
G14     54.6           43.7                4.9 +/-    1.77       6.7 +/-    1.77  0.080 / 0.120
G18     222.6          31.2                5.2 +/-    2.33       8.9 +/-    2.33  0.050 / 0.090
G22     308.3          66.9                5.5 +/-    0.73       6.0 +/-    0.73  0.050 / 0.080
G25     43.7           12.3                3.9 +/-    1.87      10.3 +/-    1.87  0.060 / 0.060
G26     144.3          32.1                2.2 +/-   16.20       3.7 +/-   16.20  0.060 / 0.090
G31     44.0           65.3                3.4 +/-    0.59       3.7 +/-    0.59  0.040 / 0.040
G32     69.2           31.4                5.6 +/-    1.71       9.6 +/-    1.71  0.040 / 0.040