PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-11:27:50
G08     269.2          19.5                4.5 +/-    2.00       9.9 +/-    2.00  0.150 / 0.380
G10     56.9           58.7                4.5 +/-    0.66       5.2 +/-    0.66  0.150 / 0.410
G14     261.0          65.4                4.8 +/-    0.74       5.3 +/-    0.74  0.030 / 0.020
G18     313.1          31.9                2.6 +/-    1.48       4.4 +/-    1.48  0.030 / 0.020
G20     92.6           38.3                5.6 +/-    1.00       8.3 +/-    1.00  0.030 / 0.020
G21     153.6          15.5                4.4 +/-    2.09      10.8 +/-    2.09  0.030 / 0.020
G24     40.2           10.5                2.4 +/-    1.90       6.6 +/-    1.90  0.050 / 0.050
G27     235.9          18.5                4.4 +/-    3.90      10.1 +/-    3.90  0.040 / 0.040
G31     180.2          25.7                4.2 +/-    2.35       8.1 +/-    2.35  0.120 / 0.360
G32     308.0          74.7                4.2 +/-    0.71       4.3 +/-    0.71  0.130 / 0.140