PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-13:12:50
G01     297.3          38.9                3.7 +/-    5.95       5.4 +/-    5.95  0.060 / 0.080
G03     310.6          16.0                2.4 +/-    1.93       5.9 +/-    1.93  0.090 / 0.080
G10     115.1          31.8                4.9 +/-    0.75       8.2 +/-    0.75  0.030 / 0.040
G11     269.6          27.0                5.9 +/-    1.28      11.0 +/-    1.28  0.030 / 0.040
G14     17.2           61.5                4.5 +/-    0.64       5.1 +/-    0.64  0.040 / 0.050
G18     256.7          49.9                6.9 +/-    5.74       8.8 +/-    5.74  0.050 / 0.050
G22     313.6          37.4                3.0 +/-    0.98       4.5 +/-    0.98  0.070 / 0.080
G25     70.9           17.7                5.1 +/-    1.30      11.9 +/-    1.30  0.050 / 0.070
G31     157.5          73.6                5.3 +/-    0.47       5.5 +/-    0.47  0.050 / 0.080
G32     41.5           49.5                3.8 +/-    1.69       4.8 +/-    1.69  0.050 / 0.090